#knowledge {
	width: 1158px;
    margin: 0 auto;
    padding-top: 50px;
    overflow: hidden;
}
#knowledge .router-link-active {
    border-left: 5px solid #196175;
    color: #186075; 
}
.knowledge-router {
    width: 260px;
    height: 190px;
    float: left;
    border: 1px solid #F2F4F7;
    text-align: center;
    border-bottom: none;
    margin-right: 22px;
}
.knowledge-router li {
    list-style: none;
    height: 46px;
    line-height: 46px;
    box-sizing:border-box;
}
.knowledge-router li a {
    display: block;
    font-size: 16px;
    color: #999999;
    letter-spacing: 1.5px;
    text-decoration: none;
    border-bottom: 1px solid #F2F4F7;
}
.knowledge-r {
    float: left;
    width: 872px;
    padding-bottom:20px;
    /* height: 197px; */
}